Method for diagnosing an engine control unit and...

Details Method for diagnosing an engine control unit and... Method for diagnosing an engine control unit and...

2007-10-09

2007-10-09

McCall, Eric S. (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Compression

C073S115060

Reexamination Certificate

active

11243782

ABSTRACT:
A method for diagnosing an engine control unit (4) conducts an analysis as to whether the signal values from the cylinder pressure sensors (3) are faulty based on at least one characteristic value which is derived from an evaluation of signal values from the cylinder pressure sensors (3) of the cylinders (2) in a combustion engine (5). In addition to this is described the engine control unit (4) designed to execute the method. Also hereby disclosed is a method which, based on symmetrical aspects, determines a crankshaft angle (phipCylMaxTDC) for a cylinder pressure maximum during push mode operation of the combustion engine (5).

REFERENCES:
patent: 5554801 (1996-09-01), Watanabe
patent: 6276319 (2001-08-01), Walter et al.
patent: 7117725 (2006-10-01), Okubo et al.
patent: 7124020 (2006-10-01), Vermonet et al.
patent: 2005/0199049 (2005-09-01), Okubo et al.
patent: 2006/0032291 (2006-02-01), Kashiwase et al.
patent: 2006/0217872 (2006-09-01), Moriya et al.
patent: 2006/0243030 (2006-11-01), Oe et al.

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